Cremona's table of elliptic curves

816 = 2⁴ · 3 · 17

Field	Data	Notes
Atkin-Lehner	2+ 3+ 17+	Signs for the Atkin-Lehner involutions
Class	816a	Isogeny class
Conductor	816	Conductor
∏ cp	8	Product of Tamagawa factors cp
deg	64	Modular degree for the optimal curve
Δ	156672 = 210 · 32 · 17	Discriminant
Eigenvalues	2+ 3+  0 -2  0  2 17+ -4	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,-48,144]	[a1,a2,a3,a4,a6]
Generators	[0:12:1]	Generators of the group modulo torsion
j	12194500/153	j-invariant
L	1.9819661024326	L(r)(E,1)/r!
Ω	3.2521275353223	Real period
R	0.30471838525794	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	408a1 3264w1 2448g1 20400bg1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 816a1

a2	a3	a5	a7	a11	a13	a17	a19	a23	a29	a31	a37	a41	a43	a47	a53	a59	a61	a67	a71	a73	a79	a83	a89	a97
+	+	0	-2	0	2	+	-4	-2	0	-6	0	-10	-4	4	-2	4	0	-4	2	-14	-6	12	-2	-2

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Quadratic twists for elliptic curve 816a1

-4	8	-3	5	-7	-11	17
408a1	3264w1	2448g1	20400bg1	39984v1	98736n1	13872k1

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Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

Part of Computational Number Theory
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